A substance that flows freely and is not a solid or a gas is a liquid substance. Water in one of the five elements, namely, earth, earth, fire, water and ether. It is a compound substance composed of hydrogen and oxygen. Pure water is colourless and tasteless. The main sources of water are the oceans, the river, the springs and the rains. Of these, the rain water is the purest of all. Water is life. No life is possible without water. Crops cannot grow without water. We take bath in water to clean our utensils and washing our clothes. The water that we drink must be pure. Impure water is full of germs and should not be drunk at all. So water should not be allowed to get polluted in any way.